Comment 2 for bug 817477

StacktraceTop:
 main_arena () from /lib/i386-linux-gnu/libc.so.6
 notify_cb (obj=0x9e603f8, pspec=0x9dc3000) at /build/buildd/gtk+3.0-3.1.10/./gtk/a11y/gtkwidgetaccessible.c:65
 g_cclosure_marshal_VOID__PARAM (closure=0x9e52938, return_value=0x0, n_param_values=2, param_values=0xb0c1bef0, invocation_hint=0xbfa67d00, marshal_data=0x0) at /build/buildd/glib2.0-2.29.14/./gobject/gmarshal.c:539
 g_closure_invoke (closure=0x9e52938, return_value=0x0, n_param_values=2, param_values=0xb0c1bef0, invocation_hint=0xbfa67d00) at /build/buildd/glib2.0-2.29.14/./gobject/gclosure.c:773
 signal_emit_unlocked_R (node=0x9db8cd0, detail=96, instance=0x9e603f8, emission_return=0x0, instance_and_params=0xb0c1bef0) at /build/buildd/glib2.0-2.29.14/./gobject/gsignal.c:3271